<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:swe="http://www.opengis.net/swe/1.0.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gml="http://www.opengis.net/gml" targetNamespace="http://www.opengis.net/swe/1.0.1" elementFormDefault="qualified" attributeFormDefault="unqualified" version="1.0.1 2010-02-01">
	<xs:annotation>
		<xs:documentation>basicTypes.xsd
	Some basic types (simpleContent) required in various places in OWS Sensor Web application schemas
	
	Copyright (c) 2007,2010 Open Geospatial Consortium, Inc. All Rights Reserved.
	To obtain additional rights of use, visit http://www.opengeospatial.org/legal/ .
		</xs:documentation>
	</xs:annotation>
	<!-- ====================================================================== -->
	<xs:import namespace="http://www.w3.org/1999/xlink" schemaLocation="../../xlink/1.0.0/xlinks.xsd"/>
	<xs:import namespace="http://www.opengis.net/gml" schemaLocation="../../gml/3.1.1/base/gml.xsd"/>
	<!-- ====================================================================== -->
	<!-- === Units of Measure === -->
	<!-- ====================================================================== -->
	<xs:simpleType name="UomSymbol">
		<xs:annotation>
			<xs:documentation>Local copy of GML 3.2 uom symbol definition
			Included for forward compatibility. 
			Note: in future of this specification based on GML 3.2, these will be removed in favour of the GML 3.2 implementation</xs:documentation>
		</xs:annotation>
		<xs:restriction base="xs:string">
			<xs:pattern value="[^: \n\r\t]+"/>
		</xs:restriction>
	</xs:simpleType>
	<!-- ............ -->
	<xs:simpleType name="UomURI">
		<xs:annotation>
			<xs:documentation>Local copy of GML 3.2 uom URI definition</xs:documentation>
		</xs:annotation>
		<xs:restriction base="xs:anyURI">
			<xs:pattern value="([a-zA-Z][a-zA-Z0-9\-\+\.]*:|\.\./|\./|#).*"/>
		</xs:restriction>
	</xs:simpleType>
	<!-- ............ -->
	<xs:simpleType name="UomIdentifier">
		<xs:annotation>
			<xs:documentation>Local copy of GML 3.2 uom identifier definition</xs:documentation>
		</xs:annotation>
		<xs:union memberTypes="swe:UomSymbol swe:UomURI"/>
	</xs:simpleType>
	<!-- ............ -->
	<xs:complexType name="UomPropertyType">
		<xs:annotation>
			<xs:documentation>Property type that indicates unit-of-measure, either by (i) inline definition; (ii)  reference; (iii)  UCUM code</xs:documentation>
		</xs:annotation>
		<xs:sequence minOccurs="0">
			<xs:element ref="gml:UnitDefinition">
				<xs:annotation>
					<xs:documentation>Defines a unit inline</xs:documentation>
				</xs:annotation>
			</xs:element>
		</xs:sequence>
		<xs:attribute name="code" type="swe:UomSymbol">
			<xs:annotation>
				<xs:documentation>Specifies a unit by using a UCUM expression (prefered)</xs:documentation>
			</xs:annotation>
		</xs:attribute>
		<xs:attributeGroup ref="gml:AssociationAttributeGroup">
			<xs:annotation>
				<xs:documentation>Specifies a unit by referencing a dictionary entry (to be used only for units not defined in UCUM)</xs:documentation>
			</xs:annotation>
		</xs:attributeGroup>
	</xs:complexType>
	<!-- ====================================================================== -->
	<!-- === Code space/vocabulary === -->
	<!-- ====================================================================== -->
   <xs:complexType name="CodeSpacePropertyType">
      <xs:annotation>
         <xs:documentation>Property type that indicates the codespace</xs:documentation>
      </xs:annotation>
      <xs:attributeGroup ref="gml:AssociationAttributeGroup"/>
   </xs:complexType>
	<!-- ====================================================================== -->
	<!-- === Time position === -->
	<!-- overlaps with GML TimePositionType -->
	<!-- ====================================================================== -->
	<xs:simpleType name="timeIso8601">
		<xs:annotation>
			<xs:documentation>Choice of time position encodings, not including numeric representation. 
	      A minor variation on gml:TimePositionUnion - carrying "indeterminate value" as content instead of an attribute.</xs:documentation>
		</xs:annotation>
		<xs:union memberTypes="xs:date xs:time xs:dateTime gml:TimeIndeterminateValueType"/>
	</xs:simpleType>
	<!-- ............ -->
	<xs:simpleType name="timePositionType">
		<xs:annotation>
			<xs:documentation>Choice of time position encodings, including numeric representation but no frame. 
	A minor variation on gml:TimePositionUnion - carrying "indeterminate value" as content instead of an attribute. </xs:documentation>
		</xs:annotation>
		<xs:union memberTypes="swe:timeIso8601 xs:double"/>
	</xs:simpleType>
	<!-- ====================================================================== -->
	<!-- === Scoped Name === -->
	<!-- equivalent to GML 3.2 CodeWithAuthorityType -->
	<!-- ====================================================================== -->
	<xs:complexType name="ScopedNameType">
		<xs:annotation>
			<xs:documentation>Explicit implementation of ISO 19103 ScopedName. 
			Extension of string which also carries a codeSpace attribute.
			Note: in future versions of this specification based on GML 3.2, this will be removed in favour of gml:CodeWithAuthorityType. </xs:documentation>
		</xs:annotation>
		<xs:simpleContent>
			<xs:extension base="xs:string">
				<xs:attribute name="codeSpace" type="xs:anyURI" use="required"/>
			</xs:extension>
		</xs:simpleContent>
	</xs:complexType>
	<!-- ====================================================================== -->
	<!-- === Lists === -->
	<!-- ================================================= -->
	<xs:simpleType name="decimalList">
		<xs:annotation>
			<xs:documentation>Simple list of double-precision numbers. 
	Note: xs:double supports either decimal or scientific notation</xs:documentation>
		</xs:annotation>
		<xs:list itemType="xs:double"/>
	</xs:simpleType>
	<!-- ............ -->
	<xs:simpleType name="decimalPair">
		<xs:annotation>
			<xs:documentation>Pair of double-precision numbers. 
	Note: xs:double supports either decimal or scientific notation</xs:documentation>
		</xs:annotation>
		<xs:restriction base="swe:decimalList">
			<xs:length value="2"/>
		</xs:restriction>
	</xs:simpleType>
	<!-- ================================================= -->
	<xs:simpleType name="countList">
		<xs:annotation>
			<xs:documentation>Simple list of integers. </xs:documentation>
		</xs:annotation>
		<xs:list itemType="xs:integer"/>
	</xs:simpleType>
	<!-- ............ -->
	<xs:simpleType name="countPair">
		<xs:annotation>
			<xs:documentation>Pair of integers. </xs:documentation>
		</xs:annotation>
		<xs:restriction base="swe:countList">
			<xs:length value="2"/>
		</xs:restriction>
	</xs:simpleType>
	<!-- ================================================= -->
	<xs:simpleType name="tokenList">
		<xs:annotation>
			<xs:documentation>Simple list of tokens. 
			Note: xs:token is a string with no embedded white-space allowed</xs:documentation>
		</xs:annotation>
		<xs:list itemType="xs:token"/>
	</xs:simpleType>
	<!-- ================================================= -->
	<xs:simpleType name="timeList">
		<xs:annotation>
			<xs:documentation>Simple list of time positions. </xs:documentation>
		</xs:annotation>
		<xs:list itemType="swe:timePositionType"/>
	</xs:simpleType>
	<!-- ............ -->
	<xs:simpleType name="timePair">
		<xs:annotation>
			<xs:documentation>Pair of time positions. </xs:documentation>
		</xs:annotation>
		<xs:restriction base="swe:timeList">
			<xs:length value="2"/>
		</xs:restriction>
	</xs:simpleType>
	<!-- ====================================================================== -->
	<!-- === Generic Interval === -->
	<!-- ====================================================================== -->
	<xs:complexType name="IntervalType">
		<xs:annotation>
			<xs:documentation>A generic interval. The type of the two limits will normally be the same.</xs:documentation>
		</xs:annotation>
		<xs:sequence>
			<xs:element name="lowerBound">
				<xs:annotation>
					<xs:documentation>Implicit xs:anyType</xs:documentation>
				</xs:annotation>
			</xs:element>
			<xs:element name="upperBound">
				<xs:annotation>
					<xs:documentation>Implicit xs:anyType</xs:documentation>
				</xs:annotation>
			</xs:element>
		</xs:sequence>
	</xs:complexType>
	<!-- ................ -->
	<xs:element name="Interval" type="swe:IntervalType">
		<xs:annotation>
			<xs:documentation>A generic interval. The type of the two limits will normally be the same.</xs:documentation>
		</xs:annotation>
	</xs:element>
	<!-- ................ -->
	<xs:complexType name="IntervalPropertyType">
		<xs:annotation>
			<xs:documentation>Inline property type for generic intervals</xs:documentation>
		</xs:annotation>
		<xs:sequence>
			<xs:element ref="swe:Interval"/>
		</xs:sequence>
	</xs:complexType>
	<!-- ====================================================================== -->
</xs:schema>
